Layui Table 复选框选中行数据获取方法

<table class="layui-table" lay-data="{url:'******', id:'test3'}" lay-filter="test3">

  <thead>
  <tr>
    <th lay-data="{type:'checkbox'}">ID</th>
    <th lay-data="{field:'id', width:80}">ID</th>
    <th lay-data="{field:'t1'}">测试项</th>
    <th lay-data="{field:'t2', edit: 'text'}">标定参数</th>
    <th lay-data="{field:'t3'}">标定值</th>
  </tr>
  </thead>
</table>

table.on('checkbox(test3)', function(obj){
      var checkStatus = table.checkStatus('test3');
      console.log(checkStatus.data)//选中行数据
      console.log(checkStatus.data.length)
      
      })
      
$('.ttes').click(function () {
      var index = parent.layer.getFrameIndex(window.name);
      var checkStatus = table.checkStatus('test3');
      console.log(checkStatus.data)//选中行数据
      var items = checkStatus.data;